dynamic-insertion-point-distribution-1.html

Enable keyboard shortcuts

<!DOCTYPE html>

<html class="reftest-wait">

  <head>

  </head>

  <body>

    <div id="host"></div>

    <script>

      var host, root;

      host = document.getElementById("host");

      root = host.attachShadow({mode: 'open'});

      root.innerHTML = 'a <slot></slot> c';

      function tweak() {

        var span = document.createElement("span");

        span.innerHTML = "b";

        // Span should be distributed to insertion point between 'a' and 'c'.

        host.appendChild(span);

        document.documentElement.removeAttribute("class");

      window.addEventListener("MozReftestInvalidate", tweak);

    </script>

  </body>

</html>